Idanre fire, 8 February 2023 Idanre, Ovia South-West
The fire started on 8 February 2023 in Idanre, Nigeria, and satellites saw it burning for 15 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 8,772 hectares from heat detections, spread across 2 municipalities.
It is the 7th largest in Ondo since 2016 (of 23 with a page). Number 11 in Nigeria in 2023, of 161.
Compare with…
Suggestions: Idanre · 2022Owo · 2020Idanre · 2016Idanre · 2016
- Burnt area
- 8,772ha
- GWIS perimeter (Copernicus)
- Duration
- 15days
- 8 Feb 2023 – 22 Feb 2023
- Municipalities hit
- 2
- local government areas
- Started on
- 8 Feb
- 2023
- Heat detections
- 433
- in a single hotspot: 122 MW
- Danger at start
- 18
- Moderate · FWI index
- Average daily power
- 470MW
- detected power per day, on average
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 5.4 mm on 25 Feb.
This area had burned before
89% of the perimeter overlaps earlier fires recorded since 2016: 5,733 ha in 2016, 1,798 ha in 2017, 999 ha in 2018, 217 ha in 2019, 6,470 ha in 2020, 4,559 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 7,783 ha that had burned before.
- 4,285 ha Idanre fire, January 2022 15,831 ha in total; the hectares shown are those it shares with this fire
- 3,557 ha Owo fire, January 2020 20,771 ha in total; the hectares shown are those it shares with this fire
- 2,621 ha Idanre fire, January 2016 28,739 ha in total; the hectares shown are those it shares with this fire
- 2,126 ha Idanre fire, February 2016 6,345 ha in total; the hectares shown are those it shares with this fire
- 1,798 ha Ovia South-West fire, February 2017 2,966 ha in total; the hectares shown are those it shares with this fire
- 999 ha Idanre fire, January 2018 3,218 ha in total; the hectares shown are those it shares with this fire
- 987 ha Idanre fire, January 2016 2,063 ha in total; the hectares shown are those it shares with this fire
- 217 ha Idanre fire, February 2019 11,751 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Idanre where it started5,533 ha reached on 8 Feb2.8 %
-
3,299 ha reached on 14 Feb1.2 %
Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.
People and buildings inside the perimeter
GHSL 2025Inside the perimeter there were about 2.5 hectares of built-up land and about 300 residents (GHSL 2025, satellite-based estimate).
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu
The weather day by day
ECMWF ERA5 reanalysis at the fire location, the standard reference for past weather, and the Canadian Fire Weather Index (the same system Copernicus uses), computed by WorldFires from that data. Days after the fire run until the first rain.
Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 8 Feb | 34.2 °C | 45 % | 30 km/h | 1.2 mm | Moderate 18 |
| 9 Feb | 37.0 °C | 33 % | 29 km/h | 0.0 mm | High 30 |
| 10 Feb | 36.8 °C | 36 % | 28 km/h | 0.0 mm | High 30 |
| 11 Feb | 36.9 °C | 36 % | 26 km/h | 0.0 mm | High 30 |
| 12 Feb | 37.7 °C | 28 % | 25 km/h | 0.0 mm | High 33 |
| 13 Feb | 36.8 °C | 28 % | 23 km/h | 0.0 mm | High 32 |
| 14 Feb | 36.8 °C | 22 % | 22 km/h | 0.0 mm | High 33 |
| 15 Feb | 36.4 °C | 21 % | 24 km/h | 0.0 mm | High 34 |
| 16 Feb | 35.1 °C | 20 % | 33 km/h | 0.0 mm | Very high 39 |
| 17 Feb | 35.9 °C | 18 % | 32 km/h | 0.0 mm | Very high 40 |
| 18 Feb | 37.5 °C | 15 % | 33 km/h | 0.0 mm | Very high 44 |
| 19 Feb | 36.2 °C | 22 % | 22 km/h | 0.0 mm | Very high 41 |
| 20 Feb | 37.4 °C | 18 % | 20 km/h | 0.0 mm | Very high 40 |
| 21 Feb | 36.9 °C | 26 % | 24 km/h | 0.0 mm | Very high 43 |
| 22 Feb | 36.5 °C | 36 % | 32 km/h | 0.2 mm | Very high 38 |
| 23 Feb after | 37.1 °C | 40 % | 34 km/h | 0.7 mm | High 29 |
| 24 Feb after | 34.8 °C | 51 % | 31 km/h | 0.7 mm | High 23 |
| 25 Feb after | 33.1 °C | 60 % | 34 km/h | 5.4 mm | Low 6 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.
The smoke
CAMS · CopernicusOn 19 February 2023 the air beside the fire reached 368 µg/m³ of PM2.5. That day averaged 218: 15 times the WHO daily guideline (15).
Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.
Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)
Detections table · 433Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 6,345 haIdanreFebruary 2016 · 13 days · 7 km away
- 15,831 haIdanre14 January 2022 · 25 days · 10 km away
- 20,771 haOwo13 January 2020 · 34 days · 11 km away
- 11,751 haIdanreFebruary 2019 · 13 days · 11 km away
- 28,739 haIdanre13 January 2016 · 29 days · 12 km away
- 12,653 haOse7 February 2017 · 21 days · 19 km away
Frequently asked questions
- How long did the Idanre fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 8 February 2023 to 22 February 2023 (15 days). The perimeter dates it from 14 February 2023 to 21 February 2023.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 8,772 hectares (87.7 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Idanre (5,533 ha, 2.8 %); Ovia South-West (3,299 ha, 1.2 %).
- What was the weather like?
- During the fire the temperature reached 37.7 °C, humidity dropped to 15 % and gusts hit 33 km/h. The fire danger index (FWI) reached 44, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Nigeria (geoBoundaries). It is not an official report.
Where to verify it
A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.
Emergency number: 112 · Emergency number and official warnings ›
Satellite cross-check
History of this page · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 21 February 2023 → 22 February 2023.
- Start date: 14 February 2023 → 8 February 2023.
Does something look wrong on this page?
This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.
Report an error
How we know this
- Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 14 February 2023 to 21 February 2023. 433 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
- Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
Where this data comes from
The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM2 (Creative Commons Attribution 4.0 International (CC BY 4.0)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.